Refractory raw material drum screening machine

Abstract

The utility model discloses a refractory raw material drum screening machine which comprises a screening machine rack and a screening drum installed on the screening machine rack in a rolling mode, the screening machine rack is connected with an installation rod, and the installation rod is connected with a screening hole poking piece through a spring. Compared with the prior art, the drum screening machine has the advantages that a traditional cleaning brush is replaced with the screen hole poking pieces, materials are firmer, the problem that bristles are broken and mixed into the materials can be effectively solved, and the beating effect of the screen hole poking pieces corresponding to screen holes is guaranteed through the springs; (2) the sieve hole poking piece is mounted on a rotatable mounting rod, the blockage condition of screening rotation is detected through a blockage detection device, and the mounting rod can rotate to separate the sieve hole poking piece from the surface of the screening roller under the condition that blockage does not occur, so that the screening efficiency is improved; therefore, loss caused by direct friction between the screening hole shifting pieces and the screening drum when the screening drum is not blocked is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory raw material screening, in particular to a drum screening machine for refractory raw materials. Background Art

[0002] Drum screening machines are more common in screening devices for refractory raw materials. Drum screening machines are prone to clogging of the screen holes when in use. In the prior art, many methods for solving the clogging of the screen holes are to set a cleaning brush on the surface of the drum. For example, the Chinese utility model patent for refractory material production, application number 202321986188.2, has a drum screen equipped with a cleaning brush through the second support rod. When the screen barrel rotates, the cleaning brush contacts the inner surface of the screen barrel and cleans the residual matter in the internal screen holes.

[0003] The inventor believes that the bristles of the cleaning brush are prone to breakage when rubbing against the drum, and the broken bristles are easily mixed into the material. In addition, the wear and tear caused by the continuous friction between the bristles and the surface of the screening drum is also very large, and the cleaning brush needs to be replaced frequently. Therefore, the purpose of this application is to propose a refractory raw material drum screening machine to solve the above problems. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a refractory raw material drum screening machine to solve the above problems.

[0005] To achieve the above-mentioned purpose, the utility model provides a drum screening machine for refractory raw materials, comprising a screening machine frame and a screening drum rotatably mounted on the screening machine frame, the screening machine frame being connected to a mounting rod, the mounting rod being connected to a screen hole paddle via a spring, the screen hole paddle and the screening drum having the same number of screen holes in axial length and corresponding positions, and the lower end of the screen hole paddle is in sliding contact with the surface of the screening drum.

[0006] Preferably, the mounting rod is embedded with a paddle guide groove, and a guide block is fixed to one end of the sieve hole paddle, and the guide block is slidably limited in the paddle guide groove.

[0007] Preferably, the mounting rod is rotatably connected to the screening machine frame, and the screening machine frame is provided with a rotating device for driving the mounting rod to rotate.

[0008] Preferably, the rotating device is a motor, and the motor is connected to a controller.

[0009] Preferably, the screening machine frame is provided with a blockage detection device, which includes a bracket fixedly connected to the screening machine frame, the bracket being fixed with a light receiving device and a light emitting device, the light emitting device being arranged on the inner side of the screening drum, and the light receiving device being arranged on the outer side of the screening drum and being connected to the controller signal.

[0010] Preferably, the screening machine frame is fixed with an adjusting slide rail, a mounting block is slidably provided in the adjusting slide rail, the mounting rod is rotatably connected to the mounting block, and the adjusting slide rail is threadedly connected with a locking bolt for fixing the mounting block.

[0011] Preferably, the guide block is provided with a socket, the upper end of the sieve hole pick is inserted into the socket, and the guide block is threadedly connected with a fixing bolt for locking the sieve hole pick.

[0012] Compared with the prior art, the present invention has the following advantages: 1) The drum screening machine of the present invention replaces the traditional cleaning brush with a sieve paddle, which is made of stronger material and can effectively solve the problem of broken brush bristles mixing into the material, and the elasticity of the spring ensures the beating effect of the sieve paddle on the sieve hole; 2) The sieve paddle of the present invention is installed on a rotatable mounting rod, and the blockage of the screening rotation is detected by a blockage detection device. When no blockage occurs, the mounting rod can be rotated to separate the sieve paddle from the surface of the screening drum, thereby reducing the loss caused by direct friction between the sieve paddle and the screening drum when the screening drum is not blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a schematic structural diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0016] Figure 3 This is a schematic diagram of the electrical module structure of the utility model.

[0017] Figure 4 This is a structural diagram of the light emitting device of the present utility model.

[0018] In the figure: 1. Screening machine frame; 11. Adjustment slide rail; 2. Screening drum; 3. Mounting rod; 31. Pick guide groove; 32. Mounting block; 33. Locking bolt; 4. Spring; 5. Screen hole pick; 51. Guide block; 52. Socket; 53. Fixing bolt; 6. Rotating device; 7. Blockage detection device; 71. Light receiving device; 72. Light emitting device; 73. Bracket; 74. Controller. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-4 The specific implementation methods of the present utility model are further described in detail.

[0020] Depend on Figure 1-4 The utility model provides a drum screening machine for refractory raw materials, comprising a screening machine frame 1 and a screening drum 2 that is rotatably mounted on the screening machine frame 1. The screening drum 2 has openings at both ends and is tiltedly arranged on the screening machine frame 1. When screening refractory materials, the materials are added through one end of the screening drum 2, and the screening drum 2 is driven to roll by a driving mechanism. During the rolling process, materials that meet the particle size leak out through the sieve holes, and materials that do not meet the particle size are discharged from the other end of the screening drum 2. The above structure is a drum screening machine for existing refractory materials, so it is not described in detail in this embodiment. The key improvements of this embodiment are:

[0021] The screening machine frame 1 is connected to a mounting rod 3, and the mounting rod 3 is connected to a sieve paddle 5 through a spring 4. The sieve paddle 5 and the screening drum 2 have the same number of sieve holes in the axial length and corresponding positions, and the lower end of the sieve paddle 5 is in sliding contact with the surface of the screening drum 2. It can be understood that the sieve paddles 5 are arranged in a linear array in the length direction of the side of the screening drum 2, and each sieve paddle 5 is connected to the mounting rod 3 through an independent spring 4. Since the sieve paddle 5 is connected through the spring 4 and the surface of the screening drum 2 is uneven due to the sieve holes, when the screening drum 2 rotates, the lower end of the sieve paddle 5 will continuously slap the sieve hole mouth on the surface of the screening drum 2 under the elastic force of the spring 4, thereby playing a good dredging role.

[0022] In some embodiments, the mounting rod 3 is embedded with a paddle guide groove 31 , and a guide block 51 is fixed to one end of the sieve paddle 5 . The guide block 51 is slidably limited in the paddle guide groove 31 to guide the swing of the sieve paddle 5 .

[0023] In order to reduce unnecessary loss of the screen paddle 5 due to friction when the screening drum 2 is not blocked, the mounting rod 3 is rotatably connected to the screening machine frame 1, and the screening machine frame 1 is provided with a rotating device 6 for driving the mounting rod 3 to rotate. The rotating setting 6 enables the mounting rod 3 to rotate on the screening machine frame 1. In this way, when the screening drum 2 is not blocked, the mounting rod 3 can be rotated to separate the lower end of the screen paddle 5 from the surface of the screening drum 2, so that no friction occurs between the screening drum 2 and the screen paddle 5 when the screening drum 2 rotates.

[0024] In some embodiments, the rotating device 6 is a motor, and the motor is connected to a controller 74 .

[0025] In order to facilitate the detection of the blockage of the screening drum 2, the screening machine frame 1 is provided with a blockage detection device 7, which includes a bracket 73 fixedly connected to the screening machine frame 1, and the bracket 73 is fixed with a light receiving device 71 and a light emitting device 72. The light emitting device 72 is arranged on the inner side of the screening drum 2 and is used to emit light outward through the sieve holes of the screening drum 2. In some embodiments, the light emitting device 72 can be a laser emitter fixed on the bracket 73, or it can be an LED light source fixed on the bracket 73. It is arranged along the length direction of the screening drum 2, and the light receiving device 71 is arranged on the outer side of the screening drum 2 and is connected to the controller 74 signal. It is used to receive the light signal emitted by the light emitting device 72 and send the received light signal to the controller 74. Within a period of time, the more serious the blockage of the sieve holes of the screening drum 2 is, the smaller the light intensity received by the light receiving device 71 is. Within a set period of time, if the illumination signal received by the light receiving device 71 is lower than the illumination pre-set by the controller 74, it means that the sieve holes of the screening drum 2 are seriously blocked. The controller 74 controls the motor to start and drive the mounting rod 3 to rotate, so that the sieve hole paddle 5 contacts the surface of the screening drum 2. In this way, when the screening drum 2 rolls, the lower end of the sieve hole paddle 5 slides on the surface of the screening drum 2 to clear the blockage in the sieve hole.

[0026] In order to make the sieve aperture paddle 5 more durable and extend the replacement time of the sieve aperture paddle 5, the screening machine frame 1 is fixed with an adjusting slide rail 11, and a mounting block 32 is slidingly provided in the adjusting slide rail 11. The mounting rod 3 is rotatably connected to the mounting block 32, and the adjusting slide rail 11 is threadedly connected with a locking bolt 33 for fixing the mounting block 32. By adjusting the setting of the slide rail 11, the distance between the sieve aperture paddle 5 and the side surface of the screening drum 2 can be adjusted by sliding the mounting block 32. When the lower end of the sieve aperture paddle 5 is worn off, the mounting block 32 is slid downward to adjust the position of the sieve aperture paddle 5 so that the lower end of the sieve aperture paddle 5 is in good contact with the surface of the screening drum 2 again.

[0027] In some embodiments, the guide block 51 is provided with a socket 52 , and the upper end of the sieve pick 5 is inserted into the socket 52 . The guide block 51 is threadedly connected with a fixing bolt 53 for locking the sieve pick 5 , so as to facilitate replacement of the sieve pick 5 .

[0028] The utility model drum screening machine for refractory raw materials uses a spring 4 to connect the mesh paddles 5 to tap the mesh holes on the surface of the screening drum 2, so that the mesh paddles 5 can accurately act on each mesh hole, which can not only effectively dredge the mesh holes, but also ensure its advantages in durability. For example, the material is stronger than the bristles, avoiding the problem of bristles mixing into the material that may occur in traditional methods. In addition, the setting of the blockage detection device 7 ensures that the rotating device 6 will only bring the mesh paddles 5 into contact with the surface of the screening drum 2 when a blockage is detected, thereby reducing unnecessary losses in the absence of blockage.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A drum screening machine for refractory raw materials, comprising a screening machine frame (1) and a screening drum (2) rollingly mounted on the screening machine frame (1), characterized in that: The screening machine frame (1) is connected to a mounting rod (3), and the mounting rod (3) is connected to a sieve hole pick (5) via a spring (4). The sieve hole pick (5) and the screening drum (2) have the same number of sieve holes in axial length and corresponding positions, and the lower end of the sieve hole pick (5) is in sliding contact with the surface of the screening drum (2).

2. The refractory raw material drum screening machine according to claim 1, characterized in that: The mounting rod (3) is embedded in a paddle guide groove (31), and a guide block (51) is fixed to one end of the sieve paddle (5), and the guide block (51) is slidably limited in the paddle guide groove (31).

3. The refractory raw material drum screening machine according to claim 1, characterized in that: The mounting rod (3) is rotatably connected to the screening machine frame (1), and a rotating device (6) for driving the mounting rod (3) to rotate is provided on the screening machine frame (1).

4. The drum screening machine for refractory raw materials according to claim 3, characterized in that: The rotating device (6) is a motor, and the motor is connected to a controller (74).

5. The drum screening machine for refractory raw materials according to claim 4, characterized in that: The screening machine frame (1) is provided with a blockage detection device (7), the blockage detection device (7) comprising a bracket (73) fixedly connected to the screening machine frame (1), the bracket (73) being fixed with a light receiving device (71) and a light emitting device (72), the light emitting device (72) being arranged on the inner side of the screening drum (2), the light receiving device (71) being arranged on the outer side of the screening drum (2) and being signal-connected to the controller (74).

6. The drum screening machine for refractory raw materials according to claim 3, characterized in that: The screening machine frame (1) is fixed with an adjusting slide rail (11), a mounting block (32) is slidably provided in the adjusting slide rail (11), the mounting rod (3) is rotatably connected to the mounting block (32), and the adjusting slide rail (11) is threadedly connected with a locking bolt (33) for fixing the mounting block (32).

7. The drum screening machine for refractory raw materials according to claim 2, characterized in that: The guide block (51) is provided with a socket (52), the upper end of the sieve aperture pick (5) is inserted into the socket (52), and the guide block (51) is threadedly connected with a fixing bolt (53) for locking the sieve aperture pick (5).

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